Symmetries in the angular distribution of exclusive semileptonic B
decays
decays
File(s)1012.4603v1.pdf (240.11 KB)
Accepted version
Author(s)
Egede, U
Hurth, T
Matias, J
Ramon, M
Reece, W
Type
Conference Paper
Abstract
We discuss a method to construct observables protected against QCD
uncertainties based on the angular distribution of the exclusive Bd -> K(*0}(->
Kpi) l+ l- decay. We focus on the identification and the interpretation of all
the symmetries of the distribution. They constitute a key ingredient to
construct a set of so-called transverse observables. We work in the framework
of QCD factorization at NLO supplemented by an estimate of power-suppressed
Lambda/mb corrections. A discussion of the new physics properties of two of the
transverse asymmetries, AT^{(2)} and AT^{(5)}, is presented. A comparison
between the transverse asymmetry AT^{(2)} and the forward-backward asymmetry
shows that AT^{(2)} emerges as an improved version of it.
uncertainties based on the angular distribution of the exclusive Bd -> K(*0}(->
Kpi) l+ l- decay. We focus on the identification and the interpretation of all
the symmetries of the distribution. They constitute a key ingredient to
construct a set of so-called transverse observables. We work in the framework
of QCD factorization at NLO supplemented by an estimate of power-suppressed
Lambda/mb corrections. A discussion of the new physics properties of two of the
transverse asymmetries, AT^{(2)} and AT^{(5)}, is presented. A comparison
between the transverse asymmetry AT^{(2)} and the forward-backward asymmetry
shows that AT^{(2)} emerges as an improved version of it.
Date Issued
2010-01-01
Date Acceptance
2010-09-06
Copyright Statement
© 2010 The Authors
Source
6th International Workshop on the CKM Unitarity Triangle
Subjects
hep-ph
hep-ph
hep-ex
Notes
Based on talks given at CKM2010, the 6th International Workshop on the CKM Unitarity Triangle, University of Warwick, UK, 6-10 September 2010 and ICHEP2010, 35th International Conference on High Energy Physics ICHEP2010, Paris, France, 21-28 July 2010
Publication Status
Published
Start Date
2010-09-06
Finish Date
2010-09-10
Coverage Spatial
Warwick, UK